Diversified spray device



Jan. 22, 1957 R. K. FORST 8,

DIVERSIFIED SPRAY DEVICE Filed Aug. 12, 1955 2 Sheets-Sheet 1 2 Sheets-Sheet 2 v W W me p m m EF 7 Wk M W H m u P Jan. 22, 1957 K. FORST DIVERSIFIED SPRAY DEVICE FiledAug. 12, 1955 gg MMLNPV 3 I El fl 4 Mw lm vBY United States Patent 118,684 nlvnuslrmn SPRAY avies mun. or-St. Lansdale, in.

Application August 12, 195,5;8eriglNo. 527,931

6 Claims (C -299-1 l7.)

This invention relates to spraying devices, and particularly to a diversified spray device for producing pressure jets and mist spray, as desired.

The basic objective of the present invention is to provide a novel; spraying device which is capable of producing various spray patterns.

Anot er. objective 'ofthis invention is to provide a spraying device in the nature of an attachment for ordinary water hose, which is capable of furnishingissuing jetsiof various patterns for great distances These objects, together with other objectives and ad'- vantages to be derived from the present invention, will at once become apparent from the following detailed description andaccompanying drawings, wherein similar numerals refer to similar parts throughout the several views.

Figure l is an elevational view of the present spraying device.

Figure 2 is a sectional view of the forward end of the spraying device, taken along the line 2-2 of Fig. 1;.

Figure 3 is a sectional view ofithe aft end of thepresent spraying device, taken: along the line 3 3 ofFig. 1;.

Figure 4 i s an enlarged sectional view, with parts broken away, of the endof the nozzle shown in the forward end of the spraying. device in. Figs. 1 and 2'.

Figure 5 is a partial elevational view-of the forward end of the filter screen whichresides within the device casing.

Figure 6 is asectionalview. ofia nozzle attachment for producing a mist spray.-

Figure- 7 is a planview of a swirl disc which forms partof thenozz-le attachment of Fig. 6.

Figure 8. is 'a sectional view .of the swirl disc taken along the li'ne. 8.-8. of Fig.7.

Referring to the drawings, and particularlyFig. l themof, the sprayingdevice of the present inventionis shown therein, in its entirety and referred to by the; letter S. As shown, this spraying device. S consistsofia cylindrical casing 1.0: which has a nozzle 1h threadablymounted in a fitting; 12* which resides; in; the comically shape o ward end 13 of said casing. The opposite endof said casing has a knurled sleeve 14 fixedly attached thereto, and said sleeve is internally threaded so; as to receive the valve fitting 15 which th-readably carriesvalve 16. The other end oi the valve 16, remote from the valve fitting 16, carries a hose fitting 1:7- which is adaptedtoreceive the threaded end: ofi a. conventio al; inch garden hose, qir i fli ifi 5 mm. ne to Fig, thefitting, 12 a antqpen s 18;. in one e nd, thereof, which endha sl internal threads for receiving the nozzle 11. A pair of opposed apertures 19 and 20 is provided in the wall of said fitting, which apertures communicate with the opening 18 for a purpose to be described below. The other end of the fitting 12, remote from the opening 18, is bored in conical fashion as at 21 and is counterbored at the apex of the conical bore.

Residing within the cylindrical casing 10 is a cylindrical filter screen 22 made from SO-mesh steel screen and of a diameter slightly smaller than the diameter of said casing so as to leave a space therebetween. The end of said filter screen adjacent to the fitting 12 carries a metallic cup 23 from which circumferential-11y projects a plurality of vanes 24. Residing within the cup 23 is a metallic core 25 having a central opening therein which receives a nipple 26 which projects outwardly from the end of the filter screen 22 through the cup 23. A projecting pin 27 slidably resides within the nipple 26 and is biased into an ever-projecting position by virtue of an expansion spring 28. The end of the pin 27 is made to fit into the counterboredapex in the conical bore 21 of the fitting 12.

In the other end of the cylindrical filter screen 22, as shown in Fig. 3, is a metallic sleeve 29 in which removabl-y resides aru-bber plug- 30. The plug- 30 carries a nozzle fitting 31 having a small orifice 3-2' in one end thereof, which orifice 32 expands intoan enlarged opening 33 within the nozzle fitting-31. The end of the fitting 3'1 remote from the orifice 32 is externally threaded so as to receive thereon an induction fitting 34. The fitting 34 is normally seated within a concavity provided therefor in the valve fitting 1'5, and has an axial opening 35' Conn municating with the bore 36 of the valve 16.

The nozzle 11 shown in Figs. 1 and 2, and inerilargement in Fig. 4', is adapted to producev a high-pressure jet capable of issuing forth for great distances. As will be noted from Fig. 4, said nozzle is provided, with avsmall cone-shaped orifice 37; in the, end thereof, which orifice suddenly expands into. the much larger bore 381 For producing a fine mist spray; a nozzle attachment A as shown in Fig 6 is provided, which attachment isvv adapted to threadably fit on the end of the, nozzle; 11. The attachment A comprises a cup 391 having a threaded opening in. one end thereof which receives theznozzle 11;. The opposite end of said cup is counterbored soas to provide a shoulder; upon which resides a screen 40 and a swirl disc 41:. The cup 39 is threaded externally and carries a sleeve 42 inside of which resides an orifice plate 43 withv a small orifice therein in adjacent spacedrelat-iqnship with the swirl disc 41. A rubber washer 44isinterposed between the orifice plate 43 and: swirl disc 41:, as shown in. Fig. 6. Turning to Figs. 7 and 8, itwillbe. seen that the swirl disc 41: is of a cuplike configuration; having a, pair of arcuate channels 45 depending therefrom; in scoop,-

like fashion. These channels. impart a spiral flow to, the liquid passing through the disc 41.

Operation Although the operation of the present; device: should; be quite, apparent: from the above description ofi its: various elements and their relationship. to; one another-,, a brief discussion of itsoperation will; be given below for the ake. of: e mpl eness and clarity- The spraying device isconnectedttoithe; ordinary garden hose or he-likeby m ans f. h ho ings 1'7, andv the valve 16 is. normally maintained in a; closed: position. If it is desired to produce a pressure jet, the attachment A isrremoved-fromthe nipple 11. AsthQValve-l-fids opened soas to; permitthe flow of liquidrinto, the sprayingdevice Sflhe; liquid will passv throughthe axial openingv 35 in the induction: fitting 34: into. theenlarged opening 33; of the. nozzle fitting. 311 As; the. opening 3e.- gradually decreases toibecome the orifice;32,. hevel9Qi y-Qfi he li qflid flowing therethrough will increase so that a high-velocity stream issues forth from the nozzle fitting 31 into the interior of the filter screen 22. This stream passes outwardly through said filter screen 22, where all solid impurities are removed therefrom while said stream is broken down into a spray within the casing 10. As the thus finely divided stream continues forwardly within the casing 10, it passes through the circumferential vanes 24 on the end of the filter screen, where a special motion a rees;

is imparted thereto. Continuing forwardly in this spiral fashion, the stream passes through the opposed apertures 19 and 20 into the opening 18 of the fitting 12, where the velocity of said stream is further increased. The stream then passes, at this Velocity, into the bore 38 of the nozzle 11 and then outwardly through the orifice 37 in the end thereof. It will be noted that since the orifice 37 decreases suddenly in diameter compared with the larger bore 38, the stream issuing forth from the nozzle 11 will partake the nature of a high-velocity jet capable of reaching great distances. In the present case, it has been found that a jet which reaches 30 feet high is produced.

It will be noted that filter screen 22 is always maintained in a tight, assembled relationship relative to the fitting 12 by virtue of the spring-biased pin 27 which resides Within the counterbored apex of the bore 21 in the end of said fitting.

With the attachment A secured to the end of the nozzle 11, a fine mist spray is produced. Thus, as the highvelocity stream issues from the nozzle 11, it is reduced in velocity by the screen 40. It then passes through the arcuate channels 45 in the swirl disc 41, where spiral motion is again imparted thereto, and finally outwardly through the small orifice in the orifice plate 43. in pass ing through said small orifice, the stream is reduced to a spray.

It is seen from the above description of the present invention that a novel and convenient spraying device is provided which is capable of producing either a highvelocity jet, or a fine mist spray, as desired.

Although the present discussion of this invention has been limited to the above-described preferred embodiment, variations thereof are possible without departing from the spirit of the invention. It is to be understood, therefore, that the invention is not to be limited to the particular embodiment disclosed, but rather only to the inventive concept as defined by the appended claims.

What is claimed is:

l. A spraying device comprising, a cylindrical housing, a nozzle projecting from one end of said cylindrical housing, a discharge fitting connected to said nozzle and residing within said housing, the discharge fitting having induction openings in its walls, a cylindrical filter screen within said housing having one end in spring-biased con tact with said discharge fitting, guide vanes circumferentially disposed about the end of said cylindrical filter screen adjacent to the discharge fitting, and a valve on the other end of said cylindrical housing.

2. A spraying device comprising, a cylindrical housing, a nozzle projecting from one end of said cylindrical housing, a discharge fitting connected to said nozzle and residing within said housing, the discharge fitting having induction openings in its Walls, a cylindrical filter screen within said housing having one end in spring-biased contact with said discharge fitting, guide vanes circumferentially disposed about the end of said filter screen adjacent to the discharge fitting, a nozzle fitting residing in the other end of said cylindrical filter screen, and a valve in the other end of said housing, said valve being connected to said nozzle fitting.

3. A spraying device comprising, a cylindrical housing, a nozzle projecting from one end of said cylindrical housing, a discharge fitting connected to said nozzle and re siding within said housing, the discharge fitting having induction openings in its walls, a cylindrical filter screen within said housing having one end in spring-biased con- 4 tact with said discharge fitting, a removable plug in the other end of said filter screen, a nozzle fitting residing within said plug and projecting into the interior of said cylindrical filter screen, and a valve in the other end of said housing, said valve being connected to said nozzle fitting.

4. A spraying device comprising, a cylindrical housing, a nozzle projecting from one end of said cylindrical housing, a discharge fitting connected to said nozzle and re siding within said housing, the discharge fitting having induction openings in its walls, a cylindrical filter screen within said housing having one end in spring-biased contact with said discharge fitting, guide vanes circumferentially disposed about the end of said cylindrical filter screen adjacent to the discharge fitting, a removable plug in the other end of said filter screen, a nozzle fitting residing within said plug and projecting into the interior of said cylindrical filter screen, and a valve in the other end of said housing, said valve being connected to said nozzle fitting.

5. A spraying device comprising, a cylindrical housing, a nozzle projecting from one end of said cylindrical housing, a discharge fitting connected to said nozzle and residing within said housing, the discharge fitting having induction openings in its walls, a cylindrical filter screen within said housing having one end in spring-biased contact with said discharge fitting, guide vanes circumferentially disposed about the end of said cylindrical filter screen adjacent to the discharge fitting, a removable plug in the other end of said filter screen, a nozzle fitting residing within saidplug and projecting into the interior of said cylindrical filter screen, a valve in the other end of said housing, said valve being connected to said nozzle fitting, and a mist-spray attachment on the end of said nozzle.

6. A spraying device comprising, a cylindrical housing; a nozzle projecting from one end of said cylindrical housing; a discharge fitting connected to said nozzle and residing within said housing, the discharge fitting having induction openings in its walls; a cylindrical filter screen within said housing having one end in spring-biased contact with said discharge fitting; guide vanes circumferentially disposed about the end of said cylindrical filter screen adjacent to the discharge fitting; a removable plug in the other end of said filter screen; a nozzle fitting residing within said plug and projecting into the interior of said cylindrical filter screen; a valve in the other end of said housing, said valve being connected to said nozzle fitting; and a mist-spray attachment on the end of said nozzle, said attachment comprising a cup having a threaded bore which receives said nozzle, a screen residing within said cup, a swirl disc adjacent to said screen, an orifice plate in spaced adjacent relationship with said swirl disc, a washer interposed between said orifice plate and swirl disc, and a sleeve threadably attached to said cup and containing said orifice plate and Washer.

References Cited in the file of this patent UNITED STATES PATENTS 2,308,476 Gerrer fi Jan. 12, 1943 FOREIGN PATENTS 45,748 Germany Jan. 3, 1889 194,040 Great Britain Mar. 8, 1923 977,664 France Nov. 15, 1950 

